Method of hanging the sieves of graut-sepahatoks



B. WRlGHT.

Grain Winnower. No.16,701. Patented Feb. 24,1857,

UNITE STATES PATENT OFFICE.

BENJ. WRIGHT, OF HUDSON, MICHIGAN.

METHOD OF HANGING THE SIEVES 0F GRAIN-SEPARATORS.

- Specification of Letters Patent No. 16,701, dated February 24, 1857.

To all whom it may concern:

Be it known that I, BENJAMIN lVRicH'r, of Hudson, in the county of Lenawee and State of Michigan, have invented a new and Improved Mode of Hanging the Shoes of Grain-Separators; and I do hereby declare that the following is a full, clear, and eXact description of the same, reference being had to the annexed drawings, making a part of this specification, in which Figure 1, is an end view of a grain separator, showing my improvement. Fig. 2, is a plan or top view of ditto.

Similar letters of reference indicate corresponding parts in the two figures.

This invention consists in the employment of an adjustable screw rod or pin and a hooked stop-plate, for regulating the shake of the shoe, as hereinafter set forth.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A, represents the frame of a grain sepa rator and B, represents the shoe which is of the usual form, provided with screens and inserted within the frame A.

The outer end of the shoe B, is attached to and supported by, two elastic bars C, C, a bar being at each side of the shoe and the inner end of the shoe is attached to a pendent or shackle D, the up er end of which is pivoted to a cross piece of the frame A.

Through the cross piece E, a screw rod or pin F, passes, the lower end of which fits in an opening a, in the cross piece or rail at the inner end of the shoe, said opening being somewhat larger than the diameter of the rod as clearly shown in both figures. This cross rail has a hooked stop plate G, pivoted to it, said plate having a recess or hook notch made in it, about equal in width to the diameter of the rod F, so that when the plate G, is turned around on the cross rail, the recess or notch will embrace the rod snugly, no play being allowed to the shoe; the hooked stop plate Gr being attached to the shoe, B, while the screw rod or pin F is attached to the fixed frame of the machine E. The shake motion is given the shoe, by the usual bell crank and connecting rod.

From the above description it will be seen that when the plate G, is moved around off the rail at the inner end of the shoe the shoe will, as it vibrates have a quick or sudden jarring motion given it in consequence of the sides of the framing a, striking against the rod F. This gives a lively motion to the grain while passing over the screens and prevents the screens from being choked or clogged.

The use of my adjustable screw pin or rod F and hooked stop-plate G, present several important advantages 1st. By screwing down rod F so that its lower end enters the slot or aperture (a) the said rod F acts as an abutment against which the shoe with its sieves is violently and suddenly thrown, at each vibration. A short and sudden knock is thus given to the shoe and sieves, which prevents the grain and chaff upon the latter, from cho (ing. The short and quick vibration of the sieves, so necessary to keep them clear is thus obtained, and as the inner end of the shoe has but a short distance to move, the number of vibrations may be increased without involving the employment of additional power, while the grain will be kept constantly in motion.

2d. By unscrewing the rod F, it will rise entirely clear from the shoe, and leave the latter to its usual motions. In cleaning some sorts of grain it is not necessary to have such short and sharp vibrations given to the shoe as those just described.

3d. By the use of the hooked stop-plate G, the motions of the inner ends of the shoe may be stopped or renewed at pleasure, according to the work which is required to be done by the machine.

The contrivances herein described, although simple in themselves, are nevertheless of importance and value in the machine under consideration. Their application involves but little expense, while their employment renders the machine far more convenient for use, and more perfect in its operations, than it would otherwise be.

I do not claim broadly, the jarring of the shoe in grain separators, in order to keep the grain sieves clear, as that is seen in many separators. Neither do I claim supporting the ends of the shoe upon elastic bars, for this is seen in J. Behels patent Aug. 21, 1847. Neither do I claim hanging the shoe in adjustable hanging bars. An example is seen in Jno. Bamboroughs patent, March 2Q, 1847, of such bars; but I do not use them. Neither do I claim supporting the inner end of the shoe by means of a screw, as in S. Ganbys patent Dec. 28, 1852. The screw rod or pin F, in my device, it will be observed, does not support the shoe. Neither do I claim any art or feature of the Within described maohlne Which is seen in any other grain separator. But to the best of my knowledge and belief no grain separator has ever been made in Which an adjustable rod or pin F and hooked stop plate G, were used in the manner and for the purposes herein 10 described. Therefore,

What I claim as new in grain separators, and desire to secure by Letters Patent is The use of an adjustable pin F and hooked stop plate G, when the said parts are applied and operate in the manner and for the purposes herein described.

BENJAMIN WRIGHT. Witnesses A. C. MERCER, F. H. WELOH. 

